Battery cooling system of novel energy vehicle

Abstract

The invention relates to a battery cooling system of a novel energy vehicle. According to the system, a metal cold plate is adopted for improving the thermal conductivity of a battery pack and a phase change material, and a metal cold plate shell is filled with the phase change material which absorbs heat to keep the temperature of the battery pack in a proper range and ensure the uniform temperature of batteries; a coil pipe type heat dissipater is arranged in the structure and the structure is filled with a liquid cooling medium to take away heat of the batteries, and a fan is arranged outside the structure to increase the heat dissipation speed of the batteries through forced air cooling; four cooling modes are effectively combined to remarkably reduce the temperature of the battery pack and ensure the temperature uniformity of battery monomers; as a temperature control sensor and a switch are designed for temperature control, the battery cooling process can be automatically adjusted and controlled by stages to achieve the purpose of intelligent temperature control.

Description

Technical field [0001] The invention involves a battery cooling system in the field of energy -saving, which is mainly used for battery cooling of new energy vehicles. Background technique [0002] Electric vehicles (EVS for short) use battery as a source of power, can achieve zero pollution in use, and can use other non -oil resources such as coal and hydraulic power to effectively solve the problem of automotive sewage and energy, so it is generally valued worldwide.The performance and quality of these vehicles to a large extent rely on the performance of the power battery packs it configured, especially the reliability, cycle performance and cost of power batteries. [0003] Temperature is a vital factors affecting the performance of power battery.When the vehicle runs under different driving conditions such as high -speed, low -speed, acceleration, deceleration, etc., the battery will discharge at different magnification, generate a lot of heat at different heat rates, plus t...

AI Technical Summary

Problems solved by technology

When the vehicle is running under different driving conditions such as high speed, low speed, acceleration, deceleration, etc., the battery will be discharged at different rates, and a large amount of heat will be generated at different heat generation rates. In addition to time accumulation and spatial influence, uneven heat accumulation will occur , resulting in complex and variable operating temperature of the battery pack

Excessively high temperature will reduce the capacity, life and energy efficiency of the battery. If the heat accumulated in the battery cannot be dissipated in time, it will lead to thermal runaway. In severe cases, the battery may have the risk of violent expansion and explosion

However, the traditional common power battery cooling and heat dissipation devices have many shortcomings such as poor heat dissipation, too much space in the car body, and low volumetric efficiency and energy efficiency.

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